Air vent for siphon flush



G. AZONE AIR VENT'FOR SIPHON FLUSH Filed Oct. 5. 1928k Oct. l 1929.

N V EN TOR.

A TTORNIEY'S.

Patented Get, l, 159529 GEORGE AZONE, OF PHILADELPHIA, PENNSYLVANIA .AIR'VENT FOR Application filed October 6,

My invention relates to a new and useful air vent for siphon flush boxesof the siphonjet type whereby the air pressure in the air pocket, formedbetween the level of the water inthe tank and in thetoilet bowl, isrelieved to facilitate the flow of water from said tank to said bowl,thereby increasing the force of pressure of the water and augmenting itscleansing capacity.

In certain conventional installations the waterinjected into the toiletbowl from the siphon flush tank is retarded in its downward iow with theresult that a considerable amount of the force of the water is lost.This `\l5 is evidenced by the fact-thattllejlow of'water intorandthrough the tpilet bowlisatfirst# rather slow and interrupted, the speedof the flow of the water increasing gradually, as the air in the airpocket formed in the pipe connecting the flush tank to the bowl isgradually released till a siphon effect is produced after all of the airin said air pocket has escaped.

Since the ability of the water to clean the s toilet bowl dependsprimarily upon theforce and speed with which the water flows, it isevident that by thus relieving the air pressure and permitting theunopposed, rapid flow of water to create a maximum siphon effect, amaximum efliciency is obtained, whereby the necessity vfor manualcleaning of thetoilet bowl is greatly reduced. To the above ends, myinvention consists of a novel siphon Hush box provided with an auxiliaryair vent communicating with the air pocket referred to and leading to,the atmosphere, whereby, when the water flows ydown through the mainconduit, the air in said air pocket will escape through said air vent,thereby permitting the uninterrupted,

'40 unretarded flow of water at full speed and with maximum force. .yThe invention consists of the novel construction hereinafter describedand finally claimed. l5 For the' purpose of illustrating my invenltion Ihave shown in the accompanying drawings one form thereof which is atpresent preferred by me, since-the same has been found'in practice togive satisfactory and reliable results, although it is to be understoodSIPHON FLUSH 1928. serial No. 310,702.

that the various instrumentalities of. which my invention consists canbe variously arranged and organized and that my invention is not limitedto the precisearrangef ment and organization of the instrumentalil 5':ties as herein shown and described. The ligure represents a verticalsection of anjair vent embodying my invention.

Referring to the drawing, 1 designates an upper tank or reservoir havingthe bottom` 2, top 3, and sides 4. A water supply pipe 5 leads into thetank 1 and is provided with the valve 6, controlled by the/Hoat 7through the arm 8 in the usual marmer. 10 designatesl a pipe adapted tocommunicate with the slil'p- 65 V pl-yipipewhen 4the valve 6 is openedto the tank 1 with water after each flushing or emptying of the tank. 11designates a gravity limb or discharge pipe extending downwardly throughthe bottom 2 of the tank into the 70 toilet, bowl 12 and having itsupper end connected to one end of an inverted U-shaped coupling 13, tothe other end of whichis connected the main siphon pipe 14 which isprovided with the branch Siphon pipe 15, '75 said pipes'15 and 14 beingat an acute an le to each other. A relief pipe 16 connects'tlie casingof the valve 6 with the upper end of the gravity discharge pipe 11through thel coupling 13, while an auxiliary pipe 17 pro- -80 videdwith. the nozzle 18, juxtaposed .to the lower end of the branch pipe 15,'communie catesat its other end with the valve 20 through thecoupling2l. f

IIn a flush box construction lof the character described, the airoconfined between the level ofthe water 23 in the main Siphon pipe 14 andthe level of the water 24 in the trap 25 forms an air cushion -whichlretards the flow of water from the tank down through the pipe 9o 11into the trap y25 of the toilet bowl 12 when the closet is flushed. Toallow the air thus confined to escape and thus eliminate theresistance'o'f the air cushion referred to, I provide the vent tube 26,the lower end 27 of 95 which extends int-o the upper portion of the trap25 above the water level therein, and the upper end 28 of which extendsupwardly through the tank 1 above the level of the water therein. By mynovel construction, the

aii confined in the pipe l1 1 and trap 25 escapes ythrough the vent tube26, thus producing a maximum siphon effect and allowingthe ywater toflow uninterruptedly through the gravity pipe 11 and trap 25 through theport y 27, with maximum force and speed, so that a quicker, morethorough and more eflicient flushing of the toilet bowl is obtained.

It will be evident that my novel air vent 26 functions by balancing theair pressure within and Without the discharge pipe ll and` creasingvolume and a pressure results which is in excess ofthe normalatmospheric pressure exerted in the upper portion of the tank l, thushindering or retarding the flow of water.

It is to be lnoted that while my novel air vent is adapted for use inconnection with a great variety of siphon flush boxes for toilet bowls,the accompanying drawing merely illustrates the application of my novelair vent to a siphon flush construction of the character disclosed in myPatent N o. 1,563,948, and to which reference can be had for a moredetailed description of the Siphon apparatus proper.

I am aware that the invention may be embodied in other specific formswithout departng from the spirit or essential attributes thereof, and Itherefore desire the present embodiment to be considered'in all respectsas illustrative and not restrictive, reference being had to the appendedclaims rather than to the foregoing description to indicate the scopeofthe invention.

The discharge pipe l1 and the air vent tube 26, extending downwardlythrough the/bot-v tom of the tank l, are provided with the Wa ter tightjoint 30 which comprises the sleeve 3l having the flange 32, the spacebetween said` pipes and said sleeve being filled with solder, plaster ofParis or any other suitable Water tight filler or packing 83. A gasketBtis interposed between the flange 32 and the edge of the bottom wall 2and the nut 35 is tightened around the lower threaded portion 36 of thesleeve 31 to assemble the joint.

Similarly, the lower ends of the pipe 11 and tube 26 are secured to thetop of the toilet bowl l2 by the water tight joint 37 comprising theexternally threaded sleeve 38, the gasket 39 and the nuts 40 and 4lwhich are tightened around the threaded sleeve 38, the space ybetweensaid pipes being filled with solder or any suitable water tight packing42 as may be desired.

Having thus described my invention what I claim as new .and desiretosecure by Letters Patent, is

l. A silphon flush for toilet bowls'comprising a toilet bowl trap, areservoir, a gravity discharge pipe leading from said reservolr intosaid trap, an air vent tube in proximity to said pipe and having itslower end in said trap above the water level therein and its upper endin said reservoir above the water level therein to permit the airconfined in said discharge pipe and trap to escape through the upper endof said vent tube when lsaid toilet bowl is flushed, and a single watertight joint for securing 'said pipe and tube to the bottom of saidreservoir comprising a sleeve having a lower threaded portion extendingthrough said bottom, a horizontally disposed flange for said sleeveengaging the upper surface of said bottom, a gasket for the underside ofsaid flange, and a threaded nut engaging said lower threaded portion andbearing against the underside of said bottom, said pipe and tube beingcon# lined and guided in said sleeve.

2. A siphon flush for toilet bowls comprising a toilet bowl trap, areservoir, a gravity discharge pipe leading from said reservoir intosaid trap, an `airvent tube in proximity to said pipe and havingits-lower end in said trap above the water level therein and its upperend in said reservoir above the water level therein to permit theair'confined in said discharge pipe and trap to escape through 'theupper end of said vent tube when said toilet bowl is flushed, a singlewater tight joint for securing saidpipe and tube to the top of saidtoilet bowl trap vcomprising a threaded sleeve surrounding said pipe andtube and extending into said trap, a nut engaging the upper portion ofsaid sleeve exterior of said trap, and a gasket intermediate said nutand the to of said trap, said pipe and tube being con ned and guided insaid sleeve. i

8. Inl a Siphon Hush for toilet bowls, a toilet bowl trap, a reservoir,a gravity discharge pipe-leading from said reservoir into said trap, anair vent tube having its lower. end in said trap above the ,water leveltherein and its upper end in said reservoir above the water leveltherein to permit the air confined in said discharge pipe and trap toescape through'the upper end of said vent tube when said toilet bowl isflushed, a water tight joint for securing said discharge pipe and airvent tube to the bottom of said reservoir comprising a sleevesurrounding said pipe' and tube andV having a lower threaded portionextending through the bottom of said reservoir, a horizontally disposedflange upon said sleeve arranged above the upper surface of said bottom,a gasket between the upper surface of said reservoir bottom andtheunderside of said flange, a'threaded-nut engaging the lower threadedportion of 'said sleeve and menace bearing against the underside of thebottom of said reservoir, a Water tight joint for securing saiddischarge pipe and air vent tube to the top of said toilet bowl trapcomprising a threaded sleeve surrounding said pipe and tube andextending into said trap, a nut lengagging lthe upper portion of saidsleeve eX- teriorly of said trap, and a gasket arranged intermediatesaid nut and the top of said toilet bowl trap.

GEORGE AZNE.

